add M88 release notes
add M88 release notes

Bug: skia:
Change-Id: Ic6934a5317c886b06f6d8ab739404254952c1f31
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/334557
Reviewed-by: Heather Miller <2e22000c5d22374561fe5fba576a31095b72dc2e@google.com>
Commit-Queue: Heather Miller <2e22000c5d22374561fe5fba576a31095b72dc2e@google.com>

google/skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,google/skia,google/skia,google/skia